<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/0.jpg" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>

    <!-- 页面主体 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse?'64px':'200px'">
          <div class="toggle_button" @click="toggleCollapse">|||</div>
          <!-- 侧边栏菜单区 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409bff"
          :unique-opened="true"
          :collapse='isCollapse'
          :collapse-transition="false"
          :default-active='activePath'
          :router="true" 
        >
        <!-- 开启路由模式 -->
        <!-- 一级菜单 -->
          <el-submenu v-for="item in menulist" :key="item.id" :index="item.id+''">
              <!-- 一级菜单模板区域 -->
            <template slot="title">
                <!-- 图标 -->
              <i :class="iconObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>
           <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path+''" v-for="subItem in item.children" :key="subItem.id"
             @click="saveNavStart('/'+subItem.path)">
                  <template slot="title">
                <!-- 图标 -->
              <i class="el-icon-menu"></i>
              <!-- 文本 -->
              <span>{{subItem.authName}}</span>
            </template>
            </el-menu-item>
          </el-submenu>
          
        </el-menu>
      </el-aside>
      <!-- 右侧主体 -->
      <el-main><router-view></router-view></el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
    data() {
        return {
            menulist:[],
            iconObj:{
                '125':'el-icon-user-solid',
                '103':'el-icon-s-tools',
                '101':'el-icon-goods',
                '102':'el-icon-s-order',
                '145':'el-icon-data-line'
            },
            // 是否折叠
            isCollapse:false,
            // 被激活的链接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList(),
        this.activePath = window.sessionStorage.getItem('activePath')
    },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
   async getMenuList(){
      const {data:res} = await this.$http.get('menus')
      if(res.meta.status!==200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
      console.log(res);
    },
    // 点击按钮折叠侧边栏
    toggleCollapse(){
        this.isCollapse = !this.isCollapse
    },
    // 保存链接激活状态
    saveNavStart(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath
    }
  },
};
</script>

<style lang="less" scoped>
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding: 0;
  margin: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #333744;
}
.el-main {
  background-color: #eaedef;
}
.home-container {
  height: 100%;
}
.el-menu{
    border-right: 0;
}
.toggle_button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}

</style>